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adoni [48]
3 years ago
15

Someone please help! Thank you!!! (worth 25 pts)

Mathematics
1 answer:
Stells [14]3 years ago
4 0
Divide each distance by its time, you will get:

Elena: 20.5/2.25 = 9.1111111 mph
Julio:  12.25/1.5=8.16666666 mph
Kevin: 20 2/3/1 2/3 = 12.4      mph
Lorena: 33.25/2 1/3 = 14.25    mph


Slowest to fastest:
Julio<Elena<Kevin<Lorena


The fastest rider is Lorena
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People tend to evaluate the quality of their lives relative to others around them (Frieswijk et al., 2004). In one study, resear
Alborosie

Answer:

Step-by-step explanation:

Hello!

Research.

n=9 frail elderly were interview and compared to a fictitious person who was worse off then the interviewee, a life-satisfaction score was determined for each person.

18, 23, 24, 22, 19, 27, 23, 26, 25

Assuming that the population average score is μ= 20, the researchers think that the elderly in the sample are more or less satisfied than others in the general population.

a. You have the information of one sample, assuming this sample has a normal distribution and each elderly interviewed is independent, then the t-test of choice is a one-sample t-test.

b. and c. If you say that the elderly are "more or less" satisfied than the others, this means that they are either as satisfied as to the general population or not satisfied as to the general population. Symbolically:

H₀: μ = 20

H₁: μ ≠ 20

This is a two-tailed test, meaning, you will have two critical regions.

d.  

α: 0.05

Left critical value: t_{n-1;/\alpha 2} = t_{8; 0.025}= -2.306

Right critical value: t_{n-1;1-\alpha /2} = t_{8;0.975} = 2.306

e.

t_{H_0}= \frac{X[bar]-Mu}{\frac{S}{\sqrt{n} } } ~t_{n-1}

X[bar]= 23

S= 3

t_{H_0}= \frac{23-20}{\frac{3}{\sqrt{9} } }= 3

f.

Considering that the calculated t-value is greater than the right critical value, the decision is to reject the null hypothesis, so using a significance level of 5% you can conclude that the average life-satisfaction score of the elderly is different than 20.

I hope it helps!

7 0
3 years ago
Melanie got a new employer pay job through the Jones recruitment agency the job pays $52,400 per year and the agency fee is equa
Zinaida [17]

Answer:

the  amount that pay to the agency is $1,091.67

Step-by-step explanation:

The computation of the amount that pay to the agency is as follows:

= Amount paid per year ÷ number of months × 25%

= $52,400 ÷ 12 months × 25%

= $1,091.67

Hence, the  amount that pay to the agency is $1,091.67

We simply applied the above formula so that the correct amount could come

5 0
2 years ago
First is brainliest please anwer Asap
vodomira [7]

Answer:

21 and 10 :) hope it helps

Step-by-step explanation:

4 0
3 years ago
HELP HELP HELP OMGOMG
user100 [1]

Answer:

Direct variation

Step-by-step explanation:

It's not iverse because the line is curved so it's direct variation

6 0
3 years ago
What is the converse of the linear pairs theorem
guapka [62]
<span>If you know the Linear pair Theorem, the converse can be easily obtained by switching the condition and the conclusion. For example, If it is raining, then the outside is wet. Converse: If the outside is wet, then it is raining. (It is not always true.)</span>
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3 years ago
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